کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5437450 | 1398174 | 2017 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A single-phase white-emitting La10(SiO4)6O3ï¼Eu2+/Eu3+ phosphor for near-UV LED-based application
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: A single-phase white-emitting La10(SiO4)6O3ï¼Eu2+/Eu3+ phosphor for near-UV LED-based application A single-phase white-emitting La10(SiO4)6O3ï¼Eu2+/Eu3+ phosphor for near-UV LED-based application](/preview/png/5437450.png)
چکیده انگلیسی
A novel single-phase white-emitting phosphor La10(SiO4)6O3 (LSO): xEu has been synthesized by high-temperature solid-state reaction. Its crystal structure, luminescence properties, fluorescence decay time and oxygen vacancies have been characterized by X-ray diffraction (XRD) and photoluminescence (PL) spectra. XRD result shows a typical oxyapatite structure with the space group of P63/m. Characteristic excitation and emission peaks of Eu2+ and Eu3+ were observed from PL studies. The optimum doping concentration of Eu was found to be 7.5 mol% (x = 0.075). In this work, the lifetimes of Eu3+ and Eu2+ were considerably longer than those from some references. Under the excitation of different near ultraviolet (n-UV) longer wavelengths (λex = 360, 370, and 380 nm), the white light emission can be realized with the CIE chromaticity coordinates (0.3907, 0.3595), (0.3472, 0.3282), and (0.3504, 0.3062) for the phosphor LSO: 0.075Eu. The chromaticity coordinates of the phosphor were all located in the white region. Therefore, it is suggested that the explored LSO: 0.075Eu phosphor can be a good candidate for white light-emitting diodes (W-LEDs) application.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 43, Issue 15, 15 October 2017, Pages 11686-11691
Journal: Ceramics International - Volume 43, Issue 15, 15 October 2017, Pages 11686-11691
نویسندگان
Xue Lu, Haitao Liu, Xinyu Yang, Yiguang Tian, Xiaoli Gao, Liyuan Han, Qin Xu,